KC!
Bought an X
I have seen some individuals split the main power bus on this fuse box to use one section as a trigger power section and the other section as the main power section. Wouldn't you be able to use the ground bus section as a trigger power section going to the switches that are triggering the relay? Considering you would just ground most circuits to frame members in the cabin/engine bay. I'm just hypothesizing, because I am planning on installing soon.